................!!!

[ALAN at MIT-MC (Alan Bawden)]

If you compile something like:

(defun (cdr foo bar) (x y z)
       (list x y z))

(in XCOMPLR) you will no only get an obnoxious message from the
compiler about redefining cdr (which you aren't).  But when you load
the fasl file the args property of the symbol cdr will be set to nil.
(Not (nil . 3), just nil.)